difference() {
    union() {
        cage();
    }
    
    translate([208.5 / 2, 0, 43.5])
    rotate([90, 0, 30])
    cylinder(h=50, d=4.2, center=true, $fn=100);
}
    
edges();

module edges() {
    translate([0, 0, 83])
    torus2(d_major=204, d_minor=6, $fn=500);

    translate([0, 0, 3])
    torus2(d_major=204, d_minor=6, $fn=500);
}

module cage() {
    difference() {
        translate([0, 0, 3])
        cylinder(h=80, d=210, $fn=500);

        translate([0, 0, -20])
        cylinder(h=150, d=204, $fn=500);

        for (a = [15 : 6 : 351]) {
            for (h = [11.5 : 18 : 66]) {
                rotate([0, 0, a])
                translate([100, 0, h])
                rotate([0, 90, 0])
                cylinder(h=50, d=9, $fn=50);
            }
        }
        
        for (a = [12 : 6 : 348]) {
            for (h = [20.5 : 18 : 75]) {
                rotate([0, 0, a])
                translate([100, 0, h])
                rotate([0, 90, 0])
                cylinder(h=50, d=9, $fn=50);
            }
        }
    }
}

module torus(r_major, r_minor) {
    rotate_extrude()
    translate([r_major, 0, 0])
    circle(r=r_minor);
}

module torus2(d_major, d_minor) {
    torus(r_major=d_major / 2, r_minor=d_minor / 2);
}